I have added to the previous post a device photo highlighting the PCB area.
I just notice that you have Analog Discovery (1). The earlier captures are from AD2.
Is any of the ADG612, AD8066, ADA4940 components heating up?
The power/heat might be limited by the FB6...
I have seen some post about the ADG612 getting damaged. This usually results in constant high or low out of scale readings.
The scope inputs are rated to +/-50V, but higher 100-1000Vs are likely to damage this first IC, ADG612. https://forum.digilentinc.com/topic/18761-i-think-its-broken/
On AD1 FB16 is on the bottom, upper-right: